/Engine/Source/Editor/UnrealEd/Public/Subsystems/ImportSubsystem.h
UImportSubsystemSubsystem for importing assets in the editor, Contains utility functions and callbacks for hooking into importing.
class UImportSubsystem : public [UEditorSubsystem](API\Editor\EditorSubsystem\UEditorSubsystem)
FOnAssetPostImp...
OnAssetPostImport
FOnAssetPostLOD...
OnAssetPostLODImport
FOnAssetPreImpo...
OnAssetPreImport
Used to register and unregister ONLY use Broadcast functions to execute the delegate.
FOnAssetReimpor...
OnAssetReimport